Build thread-enabled internal libmariadb on UNX

Change-Id: Ie0968b0802f5cbd9dc75906c4930586fb46d99ca

libmariadb/my_config.h

@@ -160,3 +160,5 @@
 
 #define RETSIGTYPE void
 #define RETQSORTTYPE void
+
+#define THREAD 1

mysqlc/Library_mysqlc.mk

@@ -36,6 +36,12 @@ $(eval $(call gb_Library_use_libraries,mysqlc,\
 	cppuhelper \
 ))
 
+ifeq ($(OS),LINUX)
+$(eval $(call gb_Library_add_libs,mysqlc,\
+	-lpthread \
+))
+endif
+
 $(eval $(call gb_Library_add_defs,mysqlc,\
 	-DCPPDBC_EXPORTS \
 	-DCPPCONN_LIB_BUILD \

mysqlcppconn/Library_mysqlcppconn.mk

@@ -53,6 +53,12 @@ $(eval $(call gb_Library_set_include,mysqlcppconn,\
 	$(MARIADB_CFLAGS) \
 ))
 
+ifeq ($(OS),LINUX)
+$(eval $(call gb_Library_add_libs,mysqlcppconn,\
+	-lpthread \
+))
+endif
+
 $(eval $(call gb_Library_add_generated_exception_objects,mysqlcppconn,\
 	UnpackedTarball/mysqlcppconn/driver/mysql_art_resultset \
 	UnpackedTarball/mysqlcppconn/driver/mysql_art_rset_metadata \